| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: solution of oxidation of aluminium alloys includes components at the following ratio, g/l: chromic anhydride 4.0 - 7.0, orthophosphoric acid 40.0 - 50.0, sodium fluoride 5.0 - 7.0, 6-hydrous zinc nitrate 4-5. ^ EFFECT: invention allows obtaining on aluminium and its alloys the quality coating, solid oxide file uniform as to thickness and withstand the action of cyclic change of temperature and tropic humidity during 12 days. ^ 3 ex |
